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Monitor and motion detection method

A monitor and motion technology, applied in TV, instrument, alarm, etc., can solve the problem of wrong judgment of the monitor, and achieve the effect of avoiding interference and accurate motion detection

Pending Publication Date: 2021-03-05
PIXART IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, certain noises in the environment (e.g. ambient light) or slight movements of small objects (i.e. unwanted objects such as leaves or flags) may cause misjudgments by the monitor

Method used

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  • Monitor and motion detection method
  • Monitor and motion detection method
  • Monitor and motion detection method

Examples

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Embodiment Construction

[0029] The content of the present invention will be described below with multiple embodiments. Please also note that the components in each embodiment can be implemented by hardware (such as a device or circuit) or firmware (such as writing at least one program in a microprocessor). implement. In addition, "first", "second" and similar descriptions in the following descriptions are only used to define different components, parameters, data, signals or steps. It is not intended to limit the order.

[0030] In the following embodiments, the terms "object" and "small object" are used. "Object" refers to a large object or an object to be detected, such as an animal, a person or a vehicle, and can also be regarded as a "target object". "Small objects" are objects that you want to filter out, such as leaves, paper, insects or flags, and can therefore also be considered "unwanted objects".

[0031] figure 1 A block diagram of a monitor according to an embodiment of the invention ...

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PUM

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Abstract

The invention discloses a monitor with a motion detection function and a motion detection method. The monitor comprises: an image sensor, configured to capture original images; a variation level computation circuit, configured to compute image variation levels of the original images; a long term computation circuit, configured to calculate a first average level for the image variation levels corresponding to M of the original images; a short term computation circuit, configured to calculate a second average level for the image variation levels corresponding to N of the original images, whereinM>N; and a motion determining circuit, configured to determine whether a motion of an object appears in a detection range of the image sensor according to a relation between the first average level and the second average level. By such monitor, the interference caused by noise or small object can be avoided. Accordingly, the motion detection of the monitor can be more accurate.

Description

technical field [0001] The present invention relates to a monitor and a motion detection method, in particular to a monitor and a motion detection method capable of avoiding interference caused by noise or small objects. Background technique [0002] In recent years, security cameras with motion detection functions have become more and more popular. A user can purchase a professional monitor from a supplier and ask the supplier to install it in the user's residence. Additionally, users can purchase less expensive monitors and install them themselves. Monitors can be used to see if someone is approaching or to see if anything unusual is happening. However, certain noises in the environment (e.g. ambient light) or slight movements of small objects (i.e. unwanted objects such as leaves or flags) may cause false judgments by the monitor. Contents of the invention [0003] It is therefore an object of the present invention to disclose a monitor that avoids disturbances cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/254G06T1/20
CPCG06T7/254G06T1/20G06T2207/30232G06T2207/10016G06T7/248H04N7/183G08B13/19606H04N7/18
Inventor 林凯文练力李永作陈子豪曾清玉梁健恒
Owner PIXART IMAGING INC
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